| 학회 |
한국재료학회 |
| 학술대회 |
2014년 봄 (05/15 ~ 05/16, 창원컨벤션센터) |
| 권호 |
20권 1호 |
| 발표분야 |
A. 전자/반도체 재료(Electronic and Semiconductor Materials) |
| 제목 |
Effect of Mg2+ substitution on the Microwave Dielectric Properties on Crystal Structural Characteristics of (Zn1-xMgx)1.9GeO3.9 Ceramics |
| 초록 |
Dependence of microwave dielectric properties of (Zn1-xMgx)1.9GeO3.9 (0≦x≦0.6) ceramics on the structural characteristics was investigated. Single phase of Zn2GeO4 with rhombohedral structure was detected from x = 0 to x = 0.3, while the secondary phases were observed for the specimens further substitution of Mg2+. With increasing of Mg2+ up to x = 0.2, the unit cell volume increased due to the larger ionic size of Mg2+ than Zn2+, however, rapidly decreased at x = 0.4. The quality factor (Qf) of the specimens with x = 0.4 showed the maximum value through the entire range of the compositions, which could be attributed to the strain of lattice by Mg2+ substitution. The dielectric constant (K) and temperature coefficient of resonant frequency (TCF) of the specimens showed the similar value with Mg2+ substitution. The effects of microstructural characteristics on microwave dielectric properties on were also discussed. |
| 저자 |
Young Jun Eoh1, Eung Soo Kim2
|
| 소속 |
1Department of Materials Engineering, 2Kyonggi Univ. |
| 키워드 |
Microwave Dielectric Properties; Crystal Structural Characteristics
|
| E-Mail |
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